Portable Plant #4 has $433 in proposed MSHA penalties and $0 outstanding across 0 contested dockets, plus health sampling and the full incident record.
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Fatalities
0
Total incidents
1
Years on record
2024
Latest incident
Jun 2024
Compliance record
MSHA citations since 2023
3
citations
0
significant & substantial
$433
proposed penalties
$433
paid to date
100% of proposed penalties paid to date, a $0 gap.
citations per 100 inspection hours
ⓘThis rate is recorded citations divided by MSHA inspection hours, per 100 hours. It reflects inspection effort, not mine size or production.
Rate withheld: 27 inspection hours is too few for a stable rate. A minimum of 1,000 inspection hours is required.
Source: MSHA inspections data, updated weekly.
Portable Plant #4 has $433 in proposed MSHA penalties and $0 outstanding across 0 contested dockets.
Penalty disposition
ⓘDifferences between proposed and paid penalties reflect both settlements and conference reductions and amounts still owed. Outstanding is the balance currently owed.
$433
proposed penalties
$433
current assessed
$433
paid to date
$0
outstanding
3 assessments are final orders; 0 contested dockets.
As of the most recent assessment on 2024-02-27.
Source: MSHA assessed-violations and conference/litigation data, updated weekly.
Violation severity profile
ⓘShares are computed over citations that carry the MSHA gravity and negligence coding; a small share of records are uncoded.
Source: MSHA controller and operator history, updated weekly.
Workforce and production
Year
Employees
2026
3
2025
1
2024
3
2023
2
2022
4
Source: MSHA quarterly employment and production, updated weekly.
Portable Plant #4 sits in Riley County, Kansas, where the Census mining category is 0.1% of county employment.
Local economic context
ⓘCounty figures come from the US Census Bureau's American Community Survey, 5-year pooled estimates, so the 2023 vintage covers 2019 through 2023. The Census category is 'mining, quarrying, and oil and gas extraction', which is broader than MSHA jurisdiction and includes oil and gas workers no mine employs. These figures describe the surrounding county, not this mine, and are not a factor in any specific incident.
Riley County, Kansas · Population 71,710
0.1%
Mining share of county employment
$59,560
Median household income
Source: US Census Bureau, American Community Survey 2023 5-year estimates.
Quarterly safety rates
ⓘCitations per million reported employee-hours. Rates begin in 2000, when MSHA's quarterly employment data starts; earlier incidents are counted but cannot be rate-adjusted. Quarters under 100,000 reported hours are greyed: too few hours for a stable rate.
Citations per million employee-hours, as reported to MSHA
Quarter
Hours worked
Citations
S&S
Per 1M hrs
2026 Q2
618
0
0
0.0
2026 Q1
681
0
0
0.0
2025 Q4
0
0
0
2025 Q3
368
0
0
0.0
2025 Q2
0
0
0
2025 Q1
0
0
0
2024 Q4
294
0
0
0.0
2024 Q3
478
0
0
0.0
Show 7 earlier quartersHide earlier quarters
Quarter
Hours worked
Citations
S&S
Per 1M hrs
2024 Q2
2,429
0
0
0.0
2024 Q1
812
1
0
1231.5
2023 Q4
997
0
0
0.0
2023 Q3
600
0
0
0.0
2023 Q2
585
0
0
0.0
2023 Q1
479
2
0
4175.4
2022 Q4
1,635
0
0
0.0
No fatalities recorded at this mine.
Reportable incidents
1 on file
2024 · 1 incident
June 11, 2024KS · Metal/Non-Metalhaul/off road/coal/ore/pit/quarry/rock/rubber tire truck driver, transportation truck driverHANDLING OF MATERIALS
Was hauling boulders to the crusher, EE got out of truck to move a rock that was in the middle of the road. EE picked it up and dropped it on right foot.
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